Water quality total coliform positive quality control samples (paper rapid method)|BNCC360409 |BNCC

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Water quality total coliform positive quality control samples (paper rapid method)

Culture medium	Nutritional gravy medium (English name: NA/NB): beef paste 3.0g, peptone 10.0g,NaCl 5.0g, agar 20.0g (not included in liquid medium), distilled water 1.0L,pH 7.0. Sterilization at 121 ℃ for 15min. [Note] Adding 5 mgMnSO4 · H2O to culture Bacillus is beneficial to produce spores.
Subculture procedure	Samples require a total of 6 mL of sterile water or sterile saline to dissolve. Before use, the quality control sample is placed at room temperature for 30 min, then opened in the biosafety cabinet, 6 mL of sterile water is immediately added, the vials are shaken after dissolution, and the positive quality control sample is obtained after shaking evenly, with a total concentration of 6 mL and a concentration of 300~3000 CFU/mL
Growth conditions	Culture temperature 37 ℃; Culture time 24-48 hours; Aerobic gas environment
Storage conditions	-20 ℃, kept away from light
Safety level	1
application	Water quality total coliform and fecal coliform group paper rapid detection quality control and personnel assessment
Sharing mode	Public welfare sharing

water quality total coliform positive quality control sample certificate

1. Product information

Sample name: water quality total coliform positive quality control sample (paper rapid method)

Sample number: BNCC 360409

sample batch: 211203

2. Product features

description	appearance is white powder (freeze-dried powder), containing protective agent, 7mL penile bottle packaging
traceability	ATCC 25922 Escherichia coli
concentration value	300~3000 CFU/mL
reference value	952 CFU/mL
uniformity and stability	Random sampling, good uniformity of results; Long-term stability test, stability qualified
applicable method	"HJ 755-2015 Rapid Paper Method for Determination of Total Coliforms and Fecal Coliforms in Water Quality"
* Note: If you have any questions about quality control samples, please contact BNCC for help

3. Instructions

Dissolve the material by 6mL of sterile water or sterile saline. Before use, the quality control sample is placed at room temperature for 30min, it was then opened in a biological safety cabinet,immediately add 6 mL of sterile water, shake the vial after dissolving，evenly shaken is a positive quality control sample，the concentration is 300~3000 CFU/mL.

4. Precautions

1. Upon receipt, please keep it properly. if it is damaged, please contact us within 24 hours.

2. Please handle in a biosafety cabinet under sterile conditions. The material shall be used up once opened.

3. The product contains risk-3 pathogenic organisms，please do not directly touch the samples with your hands, please discard the residual samples after high temperature and high pressure sterilization.

5. Preservation and transportation

long-term storage: -20 ℃, valid for 1 year; ship on ice bag; the shipping time should not exceed 10 days.

Henan Engineering Technology Research Center of Industrial Microbial Strain

website: www.bncc .org .cn tel: 400-6699-833